Pith Number

pith:KQUCRGHM

pith:2017:KQUCRGHMPJGWIUQ26TMEVOOBNI

not attested not anchored not stored refs pending

Surjunctivity and topological rigidity of algebraic dynamical systems

Michel Coornaert, Siddhartha Bhattacharya, Tullio Ceccherini-Silberstein

arxiv:1702.06201 v3 · 2017-02-20 · math.DS · math.GR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KQUCRGHMPJGWIUQ26TMEVOOBNI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:53:12.852863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54282898ec7a4d64521af4d84ab9c16a1e599aef82629fbfb7f925aa2a1ac42a

Aliases

arxiv: 1702.06201 · arxiv_version: 1702.06201v3 · doi: 10.48550/arxiv.1702.06201 · pith_short_12: KQUCRGHMPJGW · pith_short_16: KQUCRGHMPJGWIUQ2 · pith_short_8: KQUCRGHM

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/KQUCRGHMPJGWIUQ26TMEVOOBNI \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 54282898ec7a4d64521af4d84ab9c16a1e599aef82629fbfb7f925aa2a1ac42a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc8ed2303bb7e0bd7650ddcd1c9f7ddf95cec645fb7b0f6c49b6e70feb8b9630",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2017-02-20T23:04:15Z",
    "title_canon_sha256": "1c4a0112c267caa2678289978d40c569ce9980bc00c1560d297610f1ab257bb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.06201",
    "kind": "arxiv",
    "version": 3
  }
}